Improvement in feed apparatus for saw-mills



P; ETCHES J. D.. WILSON.

improvement in Feed Apparatus for Saw-Mills.

N0 126,044. Patented Apri|23,1872.

ployed for that purpose.

Unrrnn S'm'rns Earnn'r @rrron PHILIBETOHES AND JAMES D. WILSON, OFMUSKEGON, MICHIGAN.

IMPROVEMENT IN FEED APPARATUS FOR SAW-MiLLS.

Specification forming part of Letters Patent No. 126,044, dated April23,1872.

To whom it may concern:

Be it known that we, PHILIP ETGHES and JAMES D. WILSON, of Muskegon, inthe county of Muskegon and State of Michigan, have invented a new anduseful Improvement in Feed Apparatus for Saw-Mills; and we do declarethat the following is atrue and accurate description thereof, referencebeing had to the accompanying drawing and to the letters of referencemarked thereon and being a part of this specification, in which ourimprovement is shown in side elevation.

This invention relates to an improvement in the feed-pinions ofsaw-carriages, having for its object to prevent the frequent breakage ofthe feed-racks on the under side of the carriage, and to produce a moresteady motion of the carriage in feeding and gigging; and consists inthe employment of two pinions meshin g with the rack under the carriage,actuated by an intermediate gear on a shaft placed between them, towhich motion is given for feeding and gigging the carriage.

In the drawing, A represents a portion of one of the sills of asaw-carriage, and B the toothed rack on the under side thereof. C is aportion of the mill floor, and D the feedshaft, journaled in suitableboxes bolted thereto, and which shaft is rotated by a belt on its pulleyE through the mechanism usually em- F and F are counter-shafts journaledin suitable boxes, likewise bolted to the floor, said shafts beingdisposed one at either side of the shaft D, and parallel therewith. Onthe counter-shafts are secured the feed-pinions G G, both meshing withthe rack 13, and actuated by an intermediate gear, H, on the feed-shaft.

Heretofore the saw-carriage has been moved back and forth by a singlepinion on the feed shaft, meshing with the rack B, from which muchtrouble, expense, and annoyance have arisen by reason of the frequentbreakage of the teeth in the raclr sections, due to the fact that notmore than two teeth of the rack would be in gear with the pinion at atime, and would give way under the sudden strain thrown upon them ingigging back. This objection is fully overcome in our device, as therewill at all times be five or more teeth of the pinions in gear withthose of the rack, and proportionally divide and distribute the strain.

This arrangement also in sures greater steadiness in the movement of thecarriage.

What we claim as our invention, and desire to secure by Letters Patent,is-

The combination of the feed-pinions G and G with the intermediate gear Hand the rack 13, all constructed and arranged substantially as describedand shown, for the purposes set forth.

PHILIP ETOHES. JAMES D. WILSON. Witnesses:

J OSIAH DRAKE, F. W. 0001:.

